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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 4096 |
| 3 | 216000 |
| 4 | 10941048 |
| 5 | 519718464 |
| 6 | 23689358848 |
| 7 | 1040125019968 |
| 8 | 44297983526887 |
| 9 | 1837365396992000 |
| 10 | 74486671360299008 |
| 11 | 2959536976199968256 |
| 12 | 115510695146966939968 |
| 13 | 4436989542752316253696 |
| 14 | 167999383203780355895296 |
[64,4096,216000,10941048,519718464,23689358848, 1040125019968,44297983526887,1837365396992000, 74486671360299008,2959536976199968256, 115510695146966939968,4436989542752316253696, 167999383203780355895296] |